Advanced Placement • College / Chemistry

Kinetics of Crystal Violet Fading (Spectrometer)

Students determine the reaction order of crystal violet fading in the presence of sodium hydroxide.

This version of the experiment is conducted with a wireless spectrometer. A calibration curve of crystal violet is generated and optimal absorbance wavelength determined by the student. Crystal violet fading is investigated using different concentrations of sodium hydroxide.

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Student Files

11B_ACI_Kinetics_of_Fading_Spectrometer_S.docx 1.21 MB
11B_ACI_Kinetics_of_Fading_Spectrometer_S.pdf 1.54 MB

Teacher Files

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Standards Correlations

IB Topics AP Topics
6.1; 16.1; 16.3 TRA-3.B; TRA-3.C; TRA-3.A

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Spectrometer

Wireless Spectrometer (VIS)

Measure intensity, absorbance, transmittance across the visible spectrum, and fluorescence at 405nm and 500nm.

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Source: Lab #11B

Advanced Chemistry through Inquiry

Kinetics of Crystal Violet Fading (Spectrometer)